GB 29145-2023The norm of energy consumption per unit production of tungsten concentrate, molybdenum concentrate and roasted molybdenum concentrate (English PDF)

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB 29145-2012 "Energy consumption limit per unit product of roasted molybdenum concentrate" and GB 29146-2012 "Unit product of molybdenum concentrate" Energy Consumption Limit" and GB 31340-2014 "Energy Consumption Limit of Tungsten Concentrate Unit Product": With GB 29145-2012, GB 29146- Compared with GB 31340-2014 in:2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) Changed the quota requirements and indicators for tungsten concentrate, molybdenum concentrate and roasted molybdenum concentrate (see Chapter 4, Section 4 of GB 29145-2012 Chapter 4 of GB 29146-2012 and Chapter 4 of GB 31340-2014);

b) Increased energy consumption requirements per unit product of molybdenum concentrate of SABC production type (see 4:2);

c) The production type of energy consumption per unit product for roasting molybdenum concentrate has been changed to multi-hearth furnace and internally heated rotary kiln (see 4:3, GB 29145- Chapter 4 of:2012);

d) Added the calculation method of comparable energy consumption per unit product of tungsten concentrate and molybdenum concentrate (see 6:2);

e) The raw ore grade conversion coefficient has been changed (see Appendix C, Appendix C of GB 29146-2012 and Appendix C of GB 31340-2014): Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed and coordinated by the National Standardization Administration Committee: The previous versions of this document and the documents it replaces are as follows:

---First released in:2012 as GB 29145-2012, GB 29146-2012; first released in:2014 as GB 31340-2014;

---This is the first integrated revision: Tungsten concentrate, molybdenum concentrate and roasted molybdenum concentrate Energy consumption limit per unit product

1 Scope

GB 29145-2023 is the Chinese national standard on the norm of energy consumption per unit production of tungsten concentrate, molybdenum concentrate and roasted molybdenum concentrate, in the field of energy and heat transfer engineering. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 27 November 2023 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 December 2024. Classification: ICS 27.010, CCS F01. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This document stipulates the levels and technical requirements for energy consumption per unit product (hereinafter referred to as energy consumption) of tungsten concentrate, molybdenum concentrate and roasted molybdenum concentrate: requirements, statistical scope and calculation methods: This document is applicable to the calculation and consideration of unit product energy consumption of underground mined tungsten concentrate, open-pit mined molybdenum concentrate and roasted molybdenum concentrate: nuclear, as well as energy consumption control in new construction, renovation and expansion projects: This document does not apply to energy consumption calculations by companies that mine tungsten concentrates in the open pit, molybdenum concentrates in underground mines, or whose by-products are tungsten concentrates or molybdenum concentrates: Calculation, assessment, and energy consumption control of new construction, renovation and expansion projects:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 2589 General principles for comprehensive energy consumption calculation

GB/T 12723 General rules for compiling energy consumption limits per unit product

GB/T 24482 Roasted molybdenum concentrate YS/T 231 tungsten concentrate YS/T 235 molybdenum concentrate

3 Terms and definitions

The terms and definitions defined in GB/T 2589 and GB/T 12723 and the following apply to this document: 3:

1 In order to achieve comparable energy consumption per unit product in the tungsten concentrate industry, it is calculated by correcting the grade factors that affect the energy consumption per unit product of tungsten concentrate: The energy consumption per unit product comes out: 3:

2 In order to achieve comparable energy consumption per unit product in the molybdenum concentrate industry, it is calculated by correcting the grade factors that affect the energy consumption per unit product of molybdenum concentrate: The energy consumption per unit product comes out: 3:

3 In order to achieve comparable energy consumption per unit product in the tungsten concentrate or molybdenum concentrate industry, the raw mineral products that affect the energy consumption per unit product of tungsten concentrate or molybdenum concentrate are Coefficients used in correction calculations: